Merge pull request #4389

6844ae1b tx_pool: avoid parsing a whole tx if only the prefix is needed (moneromooo-monero)

2 files changed, 11 insertions, 0 deletions

diff --git a/src/cryptonote_basic/cryptonote_format_utils.cpp b/src/cryptonote_basic/cryptonote_format_utils.cpp
index 5fcfa33f6..9e9c12605 100644
--- a/src/cryptonote_basic/cryptonote_format_utils.cpp
+++ b/src/cryptonote_basic/cryptonote_format_utils.cpp
@@ -199,6 +199,16 @@ namespace cryptonote
     return true;
   }
   //---------------------------------------------------------------
+  bool parse_and_validate_tx_prefix_from_blob(const blobdata& tx_blob, transaction_prefix& tx)
+  {
+    std::stringstream ss;
+    ss << tx_blob;
+    binary_archive<false> ba(ss);
+    bool r = ::serialization::serialize_noeof(ba, tx);
+    CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction prefix from blob");
+    return true;
+  }
+  //---------------------------------------------------------------
   bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx, crypto::hash& tx_hash, crypto::hash& tx_prefix_hash)
   {
     std::stringstream ss;
diff --git a/src/cryptonote_basic/cryptonote_format_utils.h b/src/cryptonote_basic/cryptonote_format_utils.h
index bf71eb591..725c75f4e 100644
--- a/src/cryptonote_basic/cryptonote_format_utils.h
+++ b/src/cryptonote_basic/cryptonote_format_utils.h
@@ -48,6 +48,7 @@ namespace cryptonote
   //---------------------------------------------------------------
   void get_transaction_prefix_hash(const transaction_prefix& tx, crypto::hash& h);
   crypto::hash get_transaction_prefix_hash(const transaction_prefix& tx);
+  bool parse_and_validate_tx_prefix_from_blob(const blobdata& tx_blob, transaction_prefix& tx);
   bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx, crypto::hash& tx_hash, crypto::hash& tx_prefix_hash);
   bool parse_and_validate_tx_from_blob(const blobdata& tx_blob, transaction& tx);
   bool parse_and_validate_tx_base_from_blob(const blobdata& tx_blob, transaction& tx);